Pupils lack basic maths skills, such as knowing how to multiply, in about two-fifths of primary schools and half of secondary schools in Wales. That's according the school's inspectorate, ESTYN, following inspections that were carried out between 2010-2012.
The report says that pupils cannot apply advanced numeracy skills because they are struggling with the basics. Some pupils struggle with decimals, fractions and percentages, such as understanding the relationships between 2/5ths, 0.4 and 40%.
Other aspects that need to be improved are the tracking and monitoring of pupils' progress. Only a minority of primary schools and a few secondary schools have effective systems to track pupils' progress in numeracy beyond their maths lessons.
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A grey and damp start today. Rain will turn heavy and persistent late afternoon and winds will increase overnight.
Andrew walks the hills of Flintshire & Hannah visits a new saltmarsh on the Gower Peninsula, and a link to our Gallery of Wales.